.wrap {
    position: fixed;
    right: 10px;
    bottom: 20px;
    z-index: 2;
    transform: translate3d(100%, 100%, 0);
    transition: transform .3s ease-in-out;
    filter: drop-shadow(1px 1px 5px rgba(0,0,0,.5));
    &:focus,&:active{
        opacity: 0.8;
    } 
    &.active{
        transform: translate3d(0, 0, 0);
    }
}
.img {
    width: 52px;
    height: 52px;
}